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- Description
- Specifications
The NM-16A is a Cisco 16-port asynchronous network module. It provides 16 EIA/TIA-232 (formerly RS-232) data terminal equipment serial interfaces at speeds up to 134.4 kbps, and all ports can run at 134 kbps async at the same time. The module is often used for out-of-band connectivity to the console ports of other devices in a comm/terminal server setup.
The module uses 68-pin connectors with octal cables, either CAB-OCTAL-ASYNC= or CAB-OCTAL-MODEM=. The cabling and connectors match those of the Cisco 2509. Octal cables are not provided with the module. The 32-port sibling is the NM-32A.
A Cisco 3640 takes a maximum of three of these modules, and a Cisco 3620 or a Cisco 2600 takes one. Interfaces are addressed as interface async followed by the line number. Cisco IOS reserves 32 line numbers per slot, where line number = (slot x 32) + unit + 1, and the auxiliary port is line 65 on a Cisco 2600 and 3620 and line 129 on a Cisco 3640. More modules are in Cisco interface cards.
Related part: NM-32A Cisco 32-Port Asynchronous Network Module
| Part number | NM-16A |
| Product | Cisco 16-port asynchronous network module |
| Ports | 16 async |
| Interface type | EIA/TIA-232 (RS-232) DTE |
| Speed | Up to 134.4 kbps; 134 kbps on all ports at once |
| Connectors | 68-pin |
| Cables | CAB-OCTAL-ASYNC= or CAB-OCTAL-MODEM= (not included) |
| Typical use | Out-of-band console access in a comm/terminal server setup |
| Module limit | 3 per Cisco 3640; 1 per Cisco 3620; 1 per Cisco 2600 |
| IOS line numbers | 32 per slot |
| Sibling module | NM-32A (32 ports) |
| Compatible with | Cisco 2600, 2600XM, 3620, 3631, 3640, 3660, 2691, 3725, 3745 |